Starter switch



April 22, 1930. l. T 1,755,850

STARTER SWITCH Filed May 14, 1926 gnm'ntoas UNIT-ED STATES IBIBY TINDAL,OF GREENVILLE, ALABA IA STARTER SWITCH Application filed ltay 14, 1926.Serial No. 109,186.

This invention appertains to circuit closures and more particularly to anovel starter switch for automobiles.

The primary object of the invention is to {6 provide a starter switchembodying an elecf serves as means for tromagnet, which upon beingenergized,

ringing the contact points of the starter circuit into engagement, thecircuit for the magnet having a control button located at a convenientpoint to the stantially parallel resilient contact arms, one

of which has connected therewith an electromagnet for attracting theother arm which constitutes the armature therefor.

A further object of the invention is to provide a starter switch ofsimple and durable character which can be placed upon the market andincorporated with a conventional starter circuit at small cost.

With these and other objects in view the invention consists in the novelconstruction,

arrangement and formation of parts, as will be hereinafter morespecifically described, claimed and illustrated in the accompanyingdrawings, in which,

Figure 1 is a diagrammatic view showing the improved starter switchincorporated in the starter circuit,

Figure 2 is an end elevation of the switch,

Figure 3 is a side elevation of the switch showing the base thereof inlongitudinal section and illustrating the method of connecting the armswith the base, and

Figure 1 is a perspective view showing the novel resilient arms of theswitch.

Referring to the drawings in detail wherein similar reference charactersdesignate corresponding parts throughout the several views, the letter Agenerally indicates an improved starter switch which comprises a flatase plate 5 preferably formed of electric conducting material. The baseplate 5"can be connected with a stationary portion of the vehicle at anydesired point.

Arranged upon the outer face of the bases plate are closing arms 6 and 7which are formed from resilient material. These arms are normallyarranged in a'substantially parallel plane and the arm 7 is providedwith a right angularly extending attaching foot 8 at its inner end. Aconnecting bolt 8 is em-' ployed for holding the arm 7 in position andextends through the foot 8 and the base plate 5 and in order to insulatethe arm from the base plate a suitable washer or collar of nonelectricconducting material 10 is provided. As shown, the bolt extends throughsaid collar or washer and nuts 11 are threaded upon the bolt'and holdthe same in' adjusted position. The inner end of the arm 6 is likewiseprovided with a right angularly extending attaching foot, 12 and a bolt13 employed for connecting the foot to the base plate and the arm isarranged directly in front of and in longitudinal alinement with the arm7. The upper end of the arm 6 is provided with an inwardly directedextension 14 and the inner face of the extension and the inner face ofthe arm 7 adjacent to the free ends thereof are provided with relativelylarge contact buttons15 and 16.

An electromagnet 17 is secured to the inner face of the arm 7 directlyinward of the extension 14' and it is to be noted that'the arm .6 withits extension conforms to the configuration of the magnet. The arm 6constitutes an armature for the electromagnet 17, where- I by upon theenergizing of the magnet the arm 6 will be flexed for bringing thebuttons 15 and 16 into contact. j

The base plate 5 forwardly ofthe arms 6 and 7 is provided with a pair ofspaced binding posts 18 and 19 to which areconnected the terminals ofthe electromagnet '17Iby means 'ofwires .20 and 21. The binding posts 18and nected with the binding post 18. The return wire 25 of the batteryis grounded to the frame of the vehicle in the usual way. A wire 26 isconnected to the other binding post 19 of the magnet and hasincorporated 1n the length thereof a suitable switch 27 which can be ofa push button type. This wire 26 is also grounded to the frame of thevehicle as at 28. Upon the closing of the switch 27 it is obvious thatthe magnet 17 will be energized causing the flexing of the arms 6 and 7and the contacting of the buttons 15 and 16. A branch wire 23 isconnected with the wire 23 and to the upper end of the arm 7. A wire 29is grounded to the base plate 5 and leads to one terminal of thestarting motor 30, the other terminal of which is grounded to the frameof the vehicle as at 31 by a wire 32. By this arrangement when thebuttons 15 and 16 areincontact the circuit will be closed through themotor.

From the foregoing description it can be seen that I have provided anexceptionally simple type of magnetic starter switch for automobiles inwhich the circuit can be conveniently closed by the operator of thevehicle.

Changes in details may be made without departing from the spirit of theinvention or the sco e of the subjoined claim.

hat I claim 1s:

' A starter switch comprising a base plate, a

pair of arms insulated from each other and carried at their inner endsby said base plate, at least one of said arms being resilient, one

arm being straight, an electromagnet carried a by said last named arm,the other arm acting as an armature to be attracted by saidelectromagnet upon energization thereof, said armature arm extendingfrom the base parallel to the other arm to a point slightly beyond themagnet and being bent at a. right angle providing an off-set, thenextending again parallel to the first arm whereby the free ends of saidarms are arranged adjacent and parallel to each other, and electricalcontacts carried by the adjacent faces of the free ends of said arms.

In testimony whereof I afiix m signature.

IRBY N DAL.

